Valve assembly



Patented Aug. 20, 1946 UNITED STATES PATENT OFFICE I: :f $2,406,099 I VALVE ASSEMBLY Arthur J Penick, Houston, Tex. 3 Application October 16, 1943, Serial No. 506,610

This invention relates to a valve assembly. An object of the invention is to providean assembly of the character described embodying a casing with a flowway therethrough and having a controlling assembly in the casing provided with a flowway which may be brought into alignment with the flowwayof the casing to provide an unobstructed channel for the flow of fluid through the valve assembly; said controlling assembly'being movable to another position to close the flowway through the casing and being expansible with means to expand the same to form fluid tight seals, when the valve is closed, to prevent leakage of the fluid flowing through the line into which the valve assembly is connected.

Another object of the invention i-sto provide novel means for expanding the controlling assembly.

The invention also embodies a novel lubricating system for lubricating the movable parts.

With the above and other'objects in view the invention has particular relation to certain novel features of construction, operation, and arrangement of parts an example of which is given in this specification and illustrated in the accompanying drawings wherein:

Figure 1 shows a side view of the valve assem-.

bly, partly in section, showing the valve open.

Figure 2 shows a side view thereof taken at right angles to the view shown in Figure 1 and shown partly in section.

Figure 3 shows a side elevation of the controlling assembly.

Figure 4 shows a side view of the valve assembly, partly in section, showing the valve closed.

Figure 5 shows a cross-sectional view taken on the line 5-5 of Figure 4.

Figure 6 shows a cross-sectional, fragmentary view taken on the line 6-5 of Figure 2.

Referring now more particularly to the drawings wherein like numerals of reference designate the same parts in each of the figures the numeral l designates the valve casing which is, preferably substantially cylindrical in form. The casing has a flowway 2 transversely therethrough and may have the pipe connections 3, 3, around the flowway for the connection of the sections 4, 4, of the line to the casing. One end B of the casing is closed and mounted on the other end thereof is a bonnet 1 whose inner end is formed with a flared seat 8 which fits over a corresponding tapering seat 9 of the valve casing. The bonnet is secured in place by a clamp nut which has an inwardly extending flange ll en- 2Claims. (01. 251-71) gageable with an external annular shoulder 12 on the bonnet and the clamp nut l0 has a threaded connection with the valve casing as clearly shown in Figures 1 and 2.1

Within the casing there is a cylindrical controlling assembly including the cylindrical sleeve valve I3 one end of which has the transverse bore I4 and the other end thereof has the longi tudinal inwardly tapering bore l wherein there is fitted a tapering expander I 6. This expander fits snuglyin the bore 15 and is formed hollow; One end of the expander has the ducts H there-. through and the other end is internally and coarsely'threaded to receive the coarse threads l8 of the valve stem I9, This stem extends axially through the bonnet and may be turned by'any selected means as by the'hand wheel 20.

It fijsimounted-to swivel in the'bonn'et by -me'ansof an external rib 2! thereon which rotates-"in insideannular groove 2 2 in the bonnet. -"Iihejrib is'retained in-the groove 'by means of an'irisid gland 23 which is screwed into the bonnet against said rib.

The expander I6 is mounted on a coil spring 24 which is interposed between it and the bottom of the bore l5 and is retained against detachment from the valve l3 by means of the retainer ring 25 which is countersunk into the outer ends of the expander and valve and which is welded to the latter as shown in Figures 1, 2 and 4. Accordingly by turning the stem [9 the controlling assembly may be moved to open position as shown in Figure 1 or to closed position as shown in Figure 4.

Opposite the bore I5 the valve [3 is provided on one side with the longitudinal .slit 26 so that a the valve will be expansible. This slit is at right angles to the axis of the bore M.

The expander I5 is normally held in its outer position by means of a pin 21 mounted in the valve and Which projects into a socket 28 in the expander as shown more accurately in Figure .6. Its outer end extends out beyond the valve and'is dovetailed and works in a vertical dovetail groove 29 in the inner wall of the casing and whose lower end is outwardly curved as shown in Figures 2 and 4. The pin has an external annular shoulder 30 and between said shoulder and the internal annular shoulder 3| of the valve there is a coil spring 32.

Upon movement of the valv from open position, shown in Figure 1, to closed position, shown in Figure 4, the expander and the valve will move as a unit until the valve lands on the stop 33. At the same time the pin 21 will have been withdrawn from the socket 28by the outwardly curved end of the groove 29 assisted by the spring 32; 7

Upon further rotation of the stem the expander I 6 will be moved further into the bore I5 thus expanding the valve and causing it to fit very closely against the inside wall of the casing I around fiowway 2. a

Upon reverse movement of the stern l9 the expander assisted by the spring 24 will be retracted and as the controlling assembly moves" toward open position the pin 21 wi1l be forced back into the bore 28 and the parts of said assembly will be locked together.

The valve l3 has the externallongitudinal channel 35 which connects with the circumferential groovesfifi therearound and it also has a duct end is adapted to project into said socket and whose outer end extends out beyond the valve and is of a dovetailed shape; means connected With-the expander for moving the controlling assembly to one position to align the bore with the passageway and to another position to align the valve with the passageway, said casing having a longitudinal inside, dovetailed groove whose inner end is outwardly turned, the outer dovetailed end of saidlpin working irr'saidgroove-and bein engageable therewith for"retractingth* pin from said'socket as the controlling assembly moves to -said last namefdposition to release the expander 1 to allow its further movementto expand the valve into close contact with the casing walls around 7 said passageway.

31 leading from the bottom. of the bore 15 on through the corresponding endof th valve 13.

A lubricant may be introduced into the valveffi chamber through the inlet duct 38 which is con trolled by the-plug 39 and said chamber kept partly filled with lubricant." As the controlling assembly is moved back and forth the lubricant y will passalong the channel. 3-5 into the grooves 36 to lubricate the valve and will pass; through the duct 31- into the bore 15' to lubricat the'expander andits bearings andwill pass on through the ducts and will finally reach the threads Is 'as well as the bearings of the stem in the bonnet.

The drawings and descriptionare illustrative merely while the broad principle of the invention willbe'defined by the appended claims.

I WhatI-claimis:

l. A valveassemblycomprising afvalve easing having a passageway therethrough for fluid; a controlling ;-assembly in the casing embodying a sleeve valve which isslitted longitudinally and expansible at one end and; having a transverse bore at the other end, an expander in the slitted end of the valve having an external s0eket,;apin slidably m ounted in the valve and-whoseinner trolling assembly to one positionrtoalign the bore with. the passageway and to another'position to al-ign 'the Valve with the'passageway, said casing having a longitudinal inside, groove whose inner end is outwardlyturned, means on the outer end of. the pin engageable in and slidable along said groove for retracting. the pin from said socket as the controlling assembly moves to said last named position to release the expander to allow its further movement to expand the valveintoclose contract Withthe casingwalls around said passagev'vay. 

